--[[ Licensed under GNU General Public License v2 * (c) 2015, Luca CPZ --]] local helpers = require("lain.helpers") local json = require("lain.util").dkjson local focused = require("awful.screen").focused local naughty = require("naughty") local wibox = require("wibox") local math, os, string, tonumber = math, os, string, tonumber -- OpenWeatherMap -- current weather and X-days forecast -- lain.widget.weather local function factory(args) local weather = { widget = wibox.widget.textbox() } local args = args or {} local APPID = args.APPID or "3e321f9414eaedbfab34983bda77a66e" -- lain's default local timeout = args.timeout or 60 * 15 -- 15 min local timeout_forecast = args.timeout or 60 * 60 * 24 -- 24 hrs local current_call = args.current_call or "curl -s 'http://api.openweathermap.org/data/2.5/weather?id=%s&units=%s&lang=%s&APPID=%s'" local forecast_call = args.forecast_call or "curl -s 'http://api.openweathermap.org/data/2.5/forecast/daily?id=%s&units=%s&lang=%s&cnt=%s&APPID=%s'" local city_id = args.city_id or 0 -- placeholder local units = args.units or "metric" local lang = args.lang or "en" local cnt = args.cnt or 5 local date_cmd = args.date_cmd or "date -u -d @%d +'%%a %%d'" local icons_path = args.icons_path or helpers.icons_dir .. "openweathermap/" local notification_preset = args.notification_preset or {} local notification_text_fun = args.notification_text_fun or function (wn) local day = os.date("%a %d", wn["dt"]) local tmin = math.floor(wn["temp"]["min"]) local tmax = math.floor(wn["temp"]["max"]) local desc = wn["weather"][1]["description"] return string.format("%s: %s, %d - %d ", day, desc, tmin, tmax) end local weather_na_markup = args.weather_na_markup or " N/A " local followtag = args.followtag or false local showpopup = args.showpopup or "on" local settings = args.settings or function() end weather.widget:set_markup(weather_na_markup) weather.icon_path = icons_path .. "na.png" weather.icon = wibox.widget.imagebox(weather.icon_path) function weather.show(t_out) weather.hide() if followtag then notification_preset.screen = focused() end if not weather.notification_text then weather.update() weather.forecast_update() end weather.notification = naughty.notify({ text = weather.notification_text, icon = weather.icon_path, timeout = t_out, preset = notification_preset }) end function weather.hide() if weather.notification then naughty.destroy(weather.notification) weather.notification = nil end end function weather.attach(obj) obj:connect_signal("mouse::enter", function() weather.show(0) end) obj:connect_signal("mouse::leave", function() weather.hide() end) end function weather.forecast_update() local cmd = string.format(forecast_call, city_id, units, lang, cnt, APPID) helpers.async(cmd, function(f) local pos, err weather_now, pos, err = json.decode(f, 1, nil) if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then weather.notification_text = "" for i = 1, weather_now["cnt"] do weather.notification_text = weather.notification_text .. notification_text_fun(weather_now["list"][i]) if i < weather_now["cnt"] then weather.notification_text = weather.notification_text .. "\n" end end end end) end function weather.update() local cmd = string.format(current_call, city_id, units, lang, APPID) helpers.async(cmd, function(f) local pos, err, icon weather_now, pos, err = json.decode(f, 1, nil) if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then local sunrise = tonumber(weather_now["sys"]["sunrise"]) local sunset = tonumber(weather_now["sys"]["sunset"]) local icon = weather_now["weather"][1]["icon"] local loc_now = os.time() -- local time local loc_m = os.time { year = os.date("%Y"), month = os.date("%m"), day = os.date("%d"), hour = 0 } -- local time from midnight local loc_d = os.date("*t", loc_now) -- table YMDHMS for current local time (for TZ calculation) local utc_d = os.date("!*t", loc_now) -- table YMDHMS for current UTC time local utc_now = os.time(utc_d) -- UTC time now local offdt = (loc_d.isdst and 1 or 0) * 3600 + 100 * (loc_d.min - utc_d.min) / 60 -- DST offset local offset = os.difftime(loc_now, utc_now) + (loc_d.isdst and 1 or 0) * 3600 + 100 * (loc_d.min - utc_d.min) / 60 -- TZ offset (including DST) local offday = (offset < 0 and -86400) or 86400 -- 24 hour correction value (+86400 or -86400) -- if current UTC time is earlier then local midnight -> positive offset (negative otherwise) if offset * (loc_m - utc_now + offdt) > 0 then sunrise = sunrise + offday -- Shift sunset and sunrise times by 24 hours sunset = sunset + offday end if sunrise <= loc_now and loc_now <= sunset then icon = string.gsub(icon, "n", "d") else icon = string.gsub(icon, "d", "n") end weather.icon_path = icons_path .. icon .. ".png" widget = weather.widget settings() else weather.icon_path = icons_path .. "na.png" weather.widget:set_markup(weather_na_markup) end weather.icon:set_image(weather.icon_path) end) end if showpopup == "on" then weather.attach(weather.widget) end weather.timer = helpers.newtimer("weather-" .. city_id, timeout, weather.update, false, true) weather.timer_forecast = helpers.newtimer("weather_forecast-" .. city_id, timeout, weather.forecast_update, false, true) return weather end return factory